Coordinate input instrument



FIG. 1 is a partially exploded top-front-right perspective view of a coordinate input instrument;

FIG. 2 is a bottom-rear-left perspective view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a right side elevational view thereof, wherein the left side elevational view is a mirror image of the right side elevational view;

FIG. 6 is a front elevational view thereof;

FIG. 7 is a view indicated by the view indicators shown in FIG. 6; and,

FIG. 8 is a bottom-rear-left perspective view of the coordinate input instrument, wherein a cap is removed from the instrument, and replacement tips are stored in the instrument.

The dashed broken lines in the drawings show portions of the coordinate input instrument that form no part of the claimed design. 

CLAIM The ornamental design for a coordinate input instrument, as shown and described. 